In earlier Poser installations conforming clothes were sometimes fond in the props folders. Poser 1-5 P4 Conforming Clothing, Poser 6 Clothing, Ben, James, Jessi, etc and the P7 Female and Male folders were all conforming clothing props. The 'Casino' special package also installed clothing in the props folder.

Smith Micro's Miki 2 sets upzipped in the props folder too.

Earlier versions (and perhaps later Poser versions) followed certain rules, but all bets are off in Poser 6 and 7.